Disable principal renames for LDAP

The current principal rename procedure does not work with the LDAP KDB
module, instead having the effect of deleting the principal.  The fix
is not easy and requires amending the DAL (see issue #8065).  For now,
detect LDAP and error out when a rename operation is attempted.

(cherry picked from commit 8483243664a289fea142d8a9de61eba30d713871)

https://github.com/krb5/krb5/commit/338cf20b3df6d30a8fe4c4d8c8e3b718edbf35a4
Author: Greg Hudson <ghudson@mit.edu>
Committer: Tom Yu <tlyu@mit.edu>
Commit: 338cf20b3df6d30a8fe4c4d8c8e3b718edbf35a4
Branch: krb5-1.13
 src/lib/kadm5/srv/svr_principal.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)